With rising energy costs and new EPC requirements in real estate transactions, solar panels have become a strategic asset for increasing the value of your property. Whether you are a buyer or a seller, you are probably wondering whether solar energy truly provides an advantage when reselling a home. This article sheds light on the different types of installations, their impact on your home's value, costs, available financial assistance, and key points to consider. To find out how much your house is worth, with or without solar panels, start with an online property valuation and your Capifrance advisor will provide professional support to help you successfully complete all your real estate projects.

Summary

• Solar panels can increase a home's value in 2026 thanks to improved energy performance, lower utility bills, and greater resale appeal.
• The choice between photovoltaic, thermal, or hybrid panels depends on your roof, energy needs, available budget, and the desired objective in terms of value enhancement.
• Before buying or selling a property equipped with solar panels, it is essential to check the condition of the installation, its profitability, the administrative procedures completed, and the financial incentives available.
• Have your home valued by a Capifrance advisor to assess the value-enhancement potential of solar panels for your property.

What Types of Solar Panels Should You Install on Your Home?

What Is the Difference Between Photovoltaic and Thermal Solar Panels?

Photovoltaic panels directly convert sunlight into electricity using silicon cells. These cells, generally made of semiconductors, capture solar rays and generate electrical current that can be used in your home. This electricity can power your appliances, reduce your energy bills, and even be sold back to the grid when excess production is available. The efficiency of modern photovoltaic panels ranges from 15% to 22% depending on the technology used.

Solar thermal panels operate differently. They use collectors that absorb solar radiation to heat a heat-transfer fluid. This heat is then transferred to a hot water tank or heating system, helping to meet domestic hot water and heating needs. A 3 m² thermal collector system can produce between 1,200 and 1,800 thermal kWh per year depending on sunlight exposure.

There are also hybrid solar panels, which combine both technologies. They simultaneously produce electricity and heat, maximizing the use of captured solar energy. These systems are eligible for MaPrimeRénov' assistance in 2026, unlike standard photovoltaic panels.

Choosing the Right Installation for Your Roof

The orientation and pitch of your roof are decisive factors in optimizing solar energy production. The ideal orientation remains south or southeast, with a slope between 30° and 35°. This configuration captures the maximum amount of solar radiation throughout the year. Even if your roof is not perfectly oriented, installation remains worthwhile: an east- or west-facing roof generally reduces performance by only 5% to 10% when the pitch is suitable.

There are two main installation methods for solar panels. The first is an overlay installation, where the panels are mounted above the existing roof covering without modifying it. This solution is more economical and faster to install. The second is building-integrated installation, where the panels replace part of the roof covering itself, providing a more discreet appearance that is particularly appreciated in urban areas.

Before any installation, an RGE-certified professional performs a technical assessment (panel layout study) to adapt the project to the characteristics of your roof. This includes evaluating the structural strength of the roof frame, available surface area, potential shading, and determining the number of panels required. This step ensures an efficient and profitable installation while complying with local architectural constraints.

What Is the Impact on Profitability and Property Value?

Real Added Value at Resale

Installing solar panels on your home can generate significant added value when selling. Several notarial studies show that a well-maintained and relatively recent solar installation can increase a property's selling price by an average of 3% to 6%, depending on installed capacity and location. This added value is primarily driven by two factors: immediate reductions in electricity bills and the prospect of long-term savings for future buyers.

For a property sold for €300,000, this represents a potential increase in value of €9,000 to €18,000. Buyers are particularly sensitive to demonstrable monthly savings and protection against rising energy costs. If your installation is linked to an EDF OA feed-in tariff contract with several years remaining, the property's attractiveness increases even further. The initial investment is therefore recouped over the long term through both energy savings and increased resale value.

A Better EPC Thanks to Solar Energy

Installing solar panels directly improves your property's Energy Performance Certificate (EPC) rating. Since 2021, the French EPC system has taken self-consumed electricity production into account, reducing the property's primary energy consumption. A house may therefore improve by one or more EPC grades, for example moving from E to D or even C depending on the property's overall characteristics.

This EPC improvement is particularly important in 2026. The progressive ban on renting energy-inefficient properties (rated F and G) encourages homeowners to improve their energy performance. Financial institutions now offer more favorable financing conditions for energy-efficient properties. Reducing your carbon footprint while increasing the value of your assets therefore provides a double benefit.

A Strong Selling Point for Buyers

Demand for environmentally responsible homes continues to grow steadily in France. In 2025, nearly 25% of new homes complied with strict environmental standards, and this trend is now extending to the existing property market. Buyers actively seek properties that provide comfort, stability, and reduced dependence on energy prices. Homes equipped with solar installations tend to sell faster than comparable properties without energy-efficient systems.

In practice, Capifrance advisors regularly observe that homes with strong EPC ratings and solar equipment generate more viewings and purchase offers. Buyers are reassured by measurable savings on electricity bills and the prospect of owning a modern, environmentally friendly home. Highlighting your solar installation during viewings—with figures showing annual production and actual savings—can become a decisive selling argument that helps bring your property project to a successful conclusion.

How Much Does a Solar Panel Installation Cost for a Homeowner?

Average Installation Cost in 2026

The cost of a solar installation mainly depends on the installed capacity, expressed in kilowatt-peak (kWp), which corresponds to the system’s maximum production capacity under optimal conditions. In 2026, turnkey installation prices typically fall within the following ranges: between €6,000 and €10,500 for a 3 kWp system, between €9,500 and €17,000 for a 6 kWp system, and between €13,000 and €24,000 for a 9 kWp system.

Several factors influence these costs. The complexity of your roof, the quality of the panels selected (monocrystalline or polycrystalline), the type of inverter, and labor costs all play a role in the final budget. The good news is that solar panel prices have fallen significantly in recent years thanks to technological advances and larger-scale production.

Solar installations also benefit from attractive financial incentives in 2026, including a reduced VAT rate of 5.5% for projects under 9 kWp, which significantly lowers the initial investment. Hiring an RGE-certified installer remains essential to qualify for these incentives and ensure installation quality.

Efficiency and Energy Production: Evaluating the Return on Investment

The efficiency of your installation depends primarily on two factors: your geographical location and the orientation of the panels. In France, annual production ranges from 900 to 1,000 kWh per installed kWp in the north, compared with 1,300 to 1,400 kWh per installed kWp in the south—a difference of 40% to 50%.

In practical terms, a typical 6 kWp installation produces between 5,400 kWh per year in northern France and 8,400 kWh per year in southern France. With an average electricity price of €0.25/kWh, this represents annual savings of between €1,350 and €2,100 on electricity bills, depending on your self-consumption rate and the possibility of selling surplus electricity to EDF.

The payback period generally ranges between 8 and 12 years, averaging around 10 years for a properly sized residential installation. While this may seem long, it is important to remember that solar panels typically last 25 to 30 years, leaving you with 15 to 20 years of nearly free electricity production after the investment has been paid off.

Here is a comparative overview based on installed capacity:

What Financial Assistance Is Available for Solar Panels in 2026?

Self-Consumption and Selling Surplus Electricity to EDF

Self-consumption with surplus electricity resale is now the standard model for residential solar installations. The principle is simple: you consume the electricity generated by your panels, and any unused surplus is automatically fed into the public grid. EDF Obligation d’Achat (EDF OA) purchases this excess electricity at a guaranteed rate for 20 years.

In the second quarter of 2026, the surplus buyback rate is €0.04/kWh for installations under 9 kWp. For a 6 kWp installation producing approximately 6,000 kWh per year with a self-consumption rate of 30%, around 4,200 kWh is sold back annually, generating approximately €168 per year. While this amount may seem modest, it complements the savings already achieved on electricity bills.

The complete sale of all electricity produced is no longer possible for private individuals with installations below 9 kWp. This change confirms the government’s clear preference for energy self-sufficiency rather than electricity resale.

Reduced VAT, Grants, and Other Incentives Available

Since October 1, 2025, a reduced VAT rate of 5.5% has applied to the supply and installation of photovoltaic panels under 9 kWp, provided the installation meets certain environmental criteria (carbon footprint below 530 kgCO₂eq/kWp) and is associated with an energy management system. This reduced VAT rate represents a substantial saving on the total project cost.

The self-consumption grant remains the primary financial incentive. During the second quarter of 2026, it amounts to €80 per installed kWp for residential systems up to 9 kWp. In practical terms, a 6 kWp installation receives €480, paid as a single payment approximately one year after commissioning. For a 3 kWp installation, the grant reaches €240.

MaPrimeRénov’ does not subsidize photovoltaic panels but remains available for solar thermal systems (solar water heaters or combined solar systems). Grant amounts were increased in 2026, reaching up to €4,000 for very low-income households.

Finally, some local authorities offer additional subsidies. These programs significantly enhance a property's attractiveness when resold, as the current owner’s initial investment is reduced through public assistance while ensuring long-term energy savings for future buyers.

Buying or Selling a Home Equipped with Solar Panels: Key Points to Consider

When buying or selling a home equipped with solar panels, certain aspects deserve special attention to secure the transaction and avoid unpleasant surprises.

Checking the Lifespan and Condition of the Installation

Photovoltaic solar panels generally have an average lifespan of 25 to 30 years, while inverters usually need replacement every 10 to 15 years. When purchasing a property, it is essential to verify the installation date to estimate the remaining useful life of the equipment. Ask the seller for warranty documents, evidence of regular maintenance, and current production performance data.

A well-maintained system retains its efficiency and represents a genuine asset for the property. Conversely, aging panels or an inverter nearing the end of its life may generate additional costs shortly after purchase. Also consider end-of-life panel recycling: in France, the eco-organization Soren provides free collection and recycling of used solar panels, which is reassuring for environmentally conscious buyers.

Hiring a Certified Installer and Requesting Quotations

For any new installation or component replacement, choosing an RGE-certified installer (Reconnu Garant de l’Environnement) is essential. This certification not only guarantees the quality of the work but is also required to access financial incentives such as MaPrimeRénov’ and the self-consumption grant.

Always request several detailed quotations to compare offers and obtain a customized study adapted to your roof and energy needs. Value for money and warranty coverage are critical criteria for avoiding future issues. A reputable professional will also provide production monitoring and post-installation support.

Anticipating Administrative Procedures

Administrative procedures related to solar panels are often underestimated by both sellers and buyers. However, they can be complex and time-consuming. In most cases, you must submit a prior works declaration to the local town hall, apply for grid connection through Enedis (with waiting times ranging from 1 to 18 months), and sign an EDF OA contract if you wish to sell surplus production.

During a property transaction, verify that all these procedures have been completed and that documentation is up to date. The transfer of the surplus electricity purchase contract should also be anticipated to ensure continuity of the income generated by the installation. Your Capifrance real estate advisor can assist with these checks to help secure your project.

Why Solar Panels Have Become a Real Estate Value-Enhancement Asset

The growing importance of energy performance in real estate increasingly places solar installations at the center of buyers’ decision-making criteria. In a market where energy-efficient properties stand out more and more, solar panels are no longer seen merely as technical equipment but as a genuine value-enhancement factor.

A home equipped with solar panels generally offers:

• Lower energy expenses
• Improved energy autonomy
• Better EPC performance
• Greater protection against rising electricity prices
• Increased appeal among environmentally conscious buyers

These advantages help strengthen the property's attractiveness and can positively influence both selling times and the final transaction price.

The Impact of Solar Panels on the Selling Price of a House

The value increase generated by solar panels depends on several factors:

• The age of the installation
• The installed capacity
• The actual energy production
• The self-consumption rate
• The quality of the equipment
• The overall condition of the property

A recent and properly maintained installation is perceived much more favorably than an aging system requiring significant upgrades.

In practice, buyers often evaluate solar panels according to three main criteria:

1. The immediate savings generated on energy bills
2. The remaining profitability period of the installation
3. The impact on the property's EPC rating

The more clearly these benefits can be demonstrated, the stronger the value-enhancing effect during negotiations.

Self-Consumption, Energy Independence, and Buyer Appeal

One of the major attractions of solar energy lies in the possibility of self-consumption.

Many buyers are now looking to reduce their dependence on traditional energy suppliers and better control their household expenses.

A property capable of producing part of its own electricity responds directly to these expectations.

This trend is particularly noticeable among:

• Young households
• Families
• Buyers sensitive to environmental issues
• Investors seeking sustainable and resilient assets

For these buyer profiles, the presence of solar panels often constitutes a decisive advantage when comparing similar properties.

Solar Panels and Rental Property Value

The impact is not limited to resale.

For rental properties, solar panels can also improve profitability and attractiveness.

Tenants are increasingly attentive to energy costs and the energy performance of the homes they occupy.

A property equipped with a solar installation may therefore:

• Reduce vacancy periods
• Attract more qualified tenants
• Support higher rents in certain market segments
• Improve the property's overall competitiveness

This advantage is particularly relevant in areas where energy costs significantly influence household budgets.

Capifrance Supports Your Real Estate Project

Whether you are considering installing solar panels before selling your property or evaluating the value of an already equipped home, it is important to obtain a precise assessment of their impact on your property's market value.

Capifrance advisors help you:

• Estimate your property's value
• Assess the contribution of energy improvements
• Identify buyer expectations in your local market
• Optimize your sales strategy
• Secure your transaction

Thanks to their local expertise, they can determine whether your solar installation constitutes a genuine value-enhancement factor and estimate its impact on your property's market positioning.

Conclusion

Solar panels represent much more than a simple energy-saving solution.

In 2026, they have become a genuine real estate asset capable of improving a home's energy performance, increasing its attractiveness, and supporting its market value.

However, the actual impact on value depends on many factors: installation quality, age, profitability, energy production, maintenance history, and local market conditions.

Before making an investment decision or putting your property on the market, it is advisable to obtain a professional valuation in order to accurately measure the contribution of your solar installation to your property's overall value.

Frequently Asked Questions About Solar Panels and Property Value

Do Solar Panels Always Increase a Home's Value?

In most cases, yes.

A well-designed, properly maintained, and profitable solar installation generally improves a property's attractiveness and market value.

However, the impact varies depending on:

• The local market
• The age of the installation
• Energy performance
• The quality of the equipment

An outdated or poorly maintained system may have a much smaller effect.

Can You Sell a House with an EDF OA Contract?

Yes.

When a property equipped with solar panels is sold, the EDF Obligation d’Achat (EDF OA) contract can generally be transferred to the new owner.

The necessary administrative procedures must be completed to ensure continuity of electricity purchase payments.

It is therefore important to anticipate this transfer during the sales process.

How Long Do Solar Panels Last?

Most photovoltaic panels have an average lifespan of 25 to 30 years.

Their performance gradually decreases over time but generally remains high for many years.

The inverter often requires replacement after approximately 10 to 15 years.

Are Solar Panels Taken into Account in the EPC?

Yes.

The current Energy Performance Certificate (EPC) methodology takes self-consumed electricity production into account.

A solar installation can therefore improve a property's energy rating and strengthen its appeal on the real estate market.

Is It Better to Install Solar Panels Before Selling a House?

The answer depends on:

• The property's current EPC rating
• The local market
• The installation budget
• The expected value increase

In some cases, installing solar panels can significantly improve the property's attractiveness and facilitate the sale.

A profitability analysis and a professional property valuation are recommended before making a decision.

Do Buyers Ask About Solar Panel Profitability?

Absolutely.

Many buyers now request information regarding:

• Annual electricity production
• Actual energy savings
• Maintenance records
• Remaining warranties
• Existing EDF OA contracts

Providing clear and documented information helps reassure buyers and strengthen confidence during negotiations.

Author :

Frédéric Rémy – Director of Commercial Performance
A real estate professional for several years within the Capifrance network, I would like to share with you some essential advice to help you succeed in your real estate project with the support of our advisors.